CNT@CoSx/NiCo-LDH纳米复合材料的制备及其电化学性能研究
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稿件编号:166 访问权限:仅限参会人
更新:2022-03-03 09:37:58 浏览:293次
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摘要
TherhombododecahedralCNT@CoS/NiCo-LDHcompositeelectrodematerialwaspreparedbymechanicalstirringandetchingprecipitationmethod.TheelectrochemicaltestresultsshowthattheCNT@CoS/NiCo-LDH-100exhibitshighspecificcapacitanceof2794.6Fg-1at1Ag-1,whichissuperiortoothermaterialswiththeadditionofnickelsource.Whenthecurrentdensityincreasesto5Ag-1,thecapacitanceretentionis60.1%.Inthetwo-electrodesystem,thespecificcapacitanceofCNT@CoS/NiCo-LDH-100is114.1Fg-1(1Ag-1)andexcellentstabilitywith87%after1000cycles.Thedeviceexhibitsarelativelyhighenergydensityof35.64Whkg-1atapowerdensityof750Wkg-1,andevenatthehighpowerdensityof3750Wkg-1,theenergydensityofCNT@CoS/NiCo-LDHmaterialcanstillmaintain26.38Whkg-1.Hence,thesuperiorpseudocapacitiveperformanceofCNT@CoS/NiCo-LDHcanbeascribedtothesynergyamongthreematerialsaswellastheexcellentthree-dimensionalstructureobtainedbychangingamountofnickelsource.
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